Vision Sensor and Operating Method of the Same

2. The vision sensor of claim 1, wherein, when all of the internal event signals have been generated at each of the plurality of sampling time points, the event detection circuit is configured to output the valid event signal.

3. The vision sensor of claim 1, wherein, when outputting the valid event signal, the event detection circuit is configured to reset the pixel.

4. The vision sensor of claim 1, wherein a time interval of each of the plurality of sampling time points is set based on at least one of illuminance of light incident on each of the plurality of pixels and an event amount.

5. The vision sensor of claim 1, wherein the event detection circuit is configured to sample the comparison signal at a first sampling time point, is configured to sample the comparison signal at a second sampling time point after a first time from the first sampling time point, and, when the internal event signals have been generated at the first sampling time point and the second sampling time point, is configured to output the valid event signal.

6. The vision sensor of claim 1, wherein the event thresholds corresponding to comparison signals sampled at each of the plurality of sampling time points are different from each other.

7. The vision sensor of claim 1, wherein the event detection circuit is configured to sample the comparison signal in response to each of the plurality of sampling signals received at each of the plurality of sampling time points.

8. The vision sensor of claim 7, wherein the plurality of sampling signals are provided to the event detection circuit via an identical connection line.

9. The vision sensor of claim 7, wherein each of the plurality of sampling signals are provided to the event detection circuit via different connection lines from each other.

11. The vision sensor of claim 10, wherein, when the internal event signals have been generated at each of the plurality of sampling time points, the event detection circuit is configured to output the valid event signal.

12. The vision sensor of claim 10, wherein the event detection circuit is configured to sample the comparison signal at a first sampling time point, is configured to sample the comparison signal at a second sampling time point after a first time from the first sampling time point, and, when the internal event signals have been generated at the first sampling time point and the second sampling time point, is configured to output the valid event signal.

13. The vision sensor of claim 10, wherein event thresholds corresponding to comparison signals sampled at each of the plurality of sampling time points are different from each other.

14. The vision sensor of claim 10, wherein the pixel array and the event detection circuit are comprised in an identical chip.

15. The vision sensor of claim 10, wherein the pixel array and the event detection circuit are comprised in different chips from each other.

17. The operating method of claim 16, wherein the determining of whether the valid event has occurred, comprises, when the internal event signals have been generated at each of the plurality of sampling time points, determining that the valid event has occurred.

18. The operating method of claim 16, wherein the generating of the internal event signals comprises sampling the comparison signal at a first sampling time point, and sampling the comparison signal at a second sampling time point after a first time from the first sampling time point.

19. The operating method of claim 18, wherein the determining of whether the valid event has occurred, comprises, when the internal event signals have been generated at the first sampling time point and the second sampling time point, determining that the valid event has occurred.

20. The operating method of claim 16, wherein event thresholds corresponding to comparison signals sampled at each of the plurality of sampling time points are different from each other.